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nekit [7.7K]
2 years ago
15

Select three types of engineering that involve work in inaccessible environments.

Engineering
2 answers:
Pavel [41]2 years ago
8 0

Answer:

Chemical Engineer,Geological Engineer,Aerospace Engineer

Explanation:

Airida [17]2 years ago
3 0

Explanation: CAN SOMEONE TELL ME WHAT BRAINLEST MEAN??

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Air is compressed by a 40-kW compressor from P1 to P2. The air temperature is maintained constant at 25°C during this process a
AlexFokin [52]

Answer:

the rate of entropy change of the air is -0.1342 kW/K

the assumptions made in solving this problem

- Air is an ideal gas.

- the process is isothermal ( internally reversible process ). the change in internal energy is 0.

- It is a steady flow process

- Potential and Kinetic energy changes are negligible.

Explanation:

Given the data in the question;

From the first law of thermodynamics;

dQ = dU + dW ------ let this be equation 1

where dQ is the heat transfer, dU is internal energy and dW is the work done.

from the question, the process is isothermal ( internally reversible process )

Thus, the change in internal energy is 0

dU = 0

given that; Air is compressed by a 40-kW compressor from P1 to P2

since it is compressed, dW = -40 kW

we substitute into equation 1

dQ = 0 + ( -40 kW )

dQ = -40 kW

Now, change in entropy of air is;

ΔS_{air = dQ / T

given that T = 25 °C = ( 25 + 273.15 ) K = 298.15 K

so we substitute

ΔS_{air =  -40 kW / 298.15 K

ΔS_{air =  -0.13416 ≈ -0.1342 kW/K

Therefore, the rate of entropy change of the air is -0.1342 kW/K

the assumptions made in solving this problem

- Air is an ideal gas.

- the process is isothermal ( internally reversible process ). the change in internal energy is 0.

- It is a steady flow process

- Potential and Kinetic energy changes are negligible.

7 0
2 years ago
EJERCICIO 6
Ket [755]

Answer:

mnfokfnfi3or

Explanation:

can you translate it into english.....

8 0
3 years ago
How long...you...novels? A. Have/write B. Do/write C. Have/written D. Did/go
soldi70 [24.7K]

Answer:

Answer is B.

Explanation:

Subject verb agreement

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3 years ago
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When a starter motor begins to turn it produces a high…. *
Georgia [21]

Answer:

The motor produces a high Torque when it begins to start.

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2 years ago
We are used to connect the external devices and power supply to a computer. My anagram is torps
lutik1710 [3]

Answer: Ports  

Explanation:

Ports are the devices tat is used for connection of input devices and output devices wit computer.Te links created by ports between peripheral and computing system connects devices such as monitors, keyboard,modems , printer speaker s etc.  

External devices get plugged into ports which are embedded on motherboard of the computing system to establish peripheral connection.

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